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<title>class Racc::State - racc: Ruby Standard Library Documentation</title>


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    <li ><a href="#method-c-new">::new</a>
    <li ><a href="#method-i-3D-3D">#==</a>
    <li ><a href="#method-i-check_la">#check_la</a>
    <li ><a href="#method-i-conflict-3F">#conflict?</a>
    <li ><a href="#method-i-eql-3F">#eql?</a>
    <li ><a href="#method-i-inspect">#inspect</a>
    <li ><a href="#method-i-la-3D">#la=</a>
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    <li ><a href="#method-i-rr_conflict">#rr_conflict</a>
    <li ><a href="#method-i-rruleid">#rruleid</a>
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    <main role="main" aria-labelledby="class-Racc::State">
    <h1 id="class-Racc::State" class="class">
      class Racc::State
    </h1>

    <section class="description">
    
<p>A LALR state.</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">



        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-action" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">action</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-closure" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">closure</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-core" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">core</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-defact" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">defact</span><span
                class="attribute-access-type">[RW]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-goto_table" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">goto_table</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-gotos" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">gotos</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-hash" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">hash</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-ident" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">ident</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-ritems" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">ritems</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-rrconf" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">rrconf</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-rrules" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">rrules</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-srconf" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">srconf</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-stateid" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">stateid</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-stokens" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">stokens</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(ident, core)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 609</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">ident</span>, <span class="ruby-identifier">core</span>)
  <span class="ruby-ivar">@ident</span> = <span class="ruby-identifier">ident</span>
  <span class="ruby-ivar">@core</span> = <span class="ruby-identifier">core</span>
  <span class="ruby-ivar">@goto_table</span> = {}
  <span class="ruby-ivar">@gotos</span> = {}
  <span class="ruby-ivar">@stokens</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@ritems</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@action</span> = {}
  <span class="ruby-ivar">@defact</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@rrconf</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@srconf</span> = <span class="ruby-keyword">nil</span>

  <span class="ruby-ivar">@closure</span> = <span class="ruby-identifier">make_closure</span>(<span class="ruby-ivar">@core</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-3D-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">==</span><span
                                class="method-args">(oth)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="3D-3D-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 650</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">==</span>(<span class="ruby-identifier">oth</span>)
  <span class="ruby-ivar">@ident</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">oth</span>.<span class="ruby-identifier">ident</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>

                            <div class="aliases">
                              Also aliased as: <a href="State.html#method-i-eql-3F">eql?</a>
                            </div>

                          </div>

                  <div id="method-i-check_la" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">check_la</span><span
                                class="method-args">(la_rules)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="check_la-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 667</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">check_la</span>(<span class="ruby-identifier">la_rules</span>)
  <span class="ruby-ivar">@conflict</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-identifier">s</span> = []
  <span class="ruby-identifier">r</span> = []
  <span class="ruby-ivar">@closure</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">ptr</span><span class="ruby-operator">|</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">t</span> = <span class="ruby-identifier">ptr</span>.<span class="ruby-identifier">dereference</span>
      <span class="ruby-keyword">if</span> <span class="ruby-identifier">t</span>.<span class="ruby-identifier">terminal?</span>
        <span class="ruby-identifier">s</span>[<span class="ruby-identifier">t</span>.<span class="ruby-identifier">ident</span>] = <span class="ruby-identifier">t</span>
        <span class="ruby-keyword">if</span> <span class="ruby-identifier">t</span>.<span class="ruby-identifier">ident</span> <span class="ruby-operator">==</span> <span class="ruby-value">1</span>    <span class="ruby-comment"># $error</span>
          <span class="ruby-ivar">@conflict</span> = <span class="ruby-keyword">true</span>
        <span class="ruby-keyword">end</span>
      <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">else</span>
      <span class="ruby-identifier">r</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">ptr</span>.<span class="ruby-identifier">rule</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">unless</span> <span class="ruby-identifier">r</span>.<span class="ruby-identifier">empty?</span>
    <span class="ruby-keyword">if</span> <span class="ruby-keyword">not</span> <span class="ruby-identifier">s</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-keyword">or</span> <span class="ruby-identifier">r</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">&gt;</span> <span class="ruby-value">1</span>
      <span class="ruby-ivar">@conflict</span> = <span class="ruby-keyword">true</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">s</span>.<span class="ruby-identifier">compact!</span>
  <span class="ruby-ivar">@stokens</span>  = <span class="ruby-identifier">s</span>
  <span class="ruby-ivar">@rrules</span> = <span class="ruby-identifier">r</span>

  <span class="ruby-keyword">if</span> <span class="ruby-ivar">@conflict</span>
    <span class="ruby-ivar">@la_rules_i</span> = <span class="ruby-identifier">la_rules</span>.<span class="ruby-identifier">size</span>
    <span class="ruby-ivar">@la_rules</span> = <span class="ruby-identifier">r</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span> <span class="ruby-identifier">i</span>.<span class="ruby-identifier">ident</span> }
    <span class="ruby-identifier">la_rules</span>.<span class="ruby-identifier">concat</span> <span class="ruby-identifier">r</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-ivar">@la_rules_i</span> = <span class="ruby-ivar">@la_rules</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-conflict-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">conflict?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="conflict-3F-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 701</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">conflict?</span>
  <span class="ruby-ivar">@conflict</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-eql-3F" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">eql?</span><span
                                class="method-args">(oth)</span>
                            </div>

                            <div class="method-description">
                              

                            </div>


                            <div class="aliases">
                              Alias for: <a href="State.html#method-i-3D-3D">==</a>
                            </div>
                          </div>

                  <div id="method-i-inspect" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">inspect</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="inspect-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 644</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">inspect</span>
  <span class="ruby-node">&quot;&lt;state #{@ident}&gt;&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>

                            <div class="aliases">
                              Also aliased as: <a href="State.html#method-i-to_s">to_s</a>
                            </div>

                          </div>

                  <div id="method-i-la-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">la=</span><span
                                class="method-args">(la)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="la-3D-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 718</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">la=</span>(<span class="ruby-identifier">la</span>)
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@conflict</span>
  <span class="ruby-identifier">i</span> = <span class="ruby-ivar">@la_rules_i</span>
  <span class="ruby-ivar">@ritems</span> = <span class="ruby-identifier">r</span> = []
  <span class="ruby-ivar">@rrules</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">rule</span><span class="ruby-operator">|</span>
    <span class="ruby-identifier">r</span>.<span class="ruby-identifier">push</span> <span class="ruby-constant">Item</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">rule</span>, <span class="ruby-identifier">la</span>[<span class="ruby-identifier">i</span>])
    <span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-make_closure" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">make_closure</span><span
                                class="method-args">(core)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="make_closure-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 656</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">make_closure</span>(<span class="ruby-identifier">core</span>)
  <span class="ruby-identifier">set</span> = <span class="ruby-constant">ISet</span>.<span class="ruby-identifier">new</span>
  <span class="ruby-identifier">core</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">ptr</span><span class="ruby-operator">|</span>
    <span class="ruby-identifier">set</span>.<span class="ruby-identifier">add</span> <span class="ruby-identifier">ptr</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">t</span> = <span class="ruby-identifier">ptr</span>.<span class="ruby-identifier">dereference</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">t</span>.<span class="ruby-identifier">nonterminal?</span>
      <span class="ruby-identifier">set</span>.<span class="ruby-identifier">update_a</span> <span class="ruby-identifier">t</span>.<span class="ruby-identifier">expand</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">set</span>.<span class="ruby-identifier">to_a</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-n_rrconflicts" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">n_rrconflicts</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="n_rrconflicts-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 754</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">n_rrconflicts</span>
  <span class="ruby-ivar">@rrconf</span> <span class="ruby-operator">?</span> <span class="ruby-ivar">@rrconf</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">:</span> <span class="ruby-value">0</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-n_srconflicts" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">n_srconflicts</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="n_srconflicts-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 750</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">n_srconflicts</span>
  <span class="ruby-ivar">@srconf</span> <span class="ruby-operator">?</span> <span class="ruby-ivar">@srconf</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">:</span> <span class="ruby-value">0</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-rr_conflict" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">rr_conflict</span><span
                                class="method-args">(high, low, ctok)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="rr_conflict-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 728</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">rr_conflict</span>(<span class="ruby-identifier">high</span>, <span class="ruby-identifier">low</span>, <span class="ruby-identifier">ctok</span>)
  <span class="ruby-identifier">c</span> = <span class="ruby-constant">RRconflict</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@ident</span>, <span class="ruby-identifier">high</span>, <span class="ruby-identifier">low</span>, <span class="ruby-identifier">ctok</span>)

  <span class="ruby-ivar">@rrconf</span> <span class="ruby-operator">||=</span> {}
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">a</span> = <span class="ruby-ivar">@rrconf</span>[<span class="ruby-identifier">ctok</span>]
    <span class="ruby-identifier">a</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">c</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-ivar">@rrconf</span>[<span class="ruby-identifier">ctok</span>] = [<span class="ruby-identifier">c</span>]
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-rruleid" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">rruleid</span><span
                                class="method-args">(rule)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="rruleid-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 705</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">rruleid</span>(<span class="ruby-identifier">rule</span>)
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">i</span> = <span class="ruby-ivar">@la_rules</span>.<span class="ruby-identifier">index</span>(<span class="ruby-identifier">rule</span>.<span class="ruby-identifier">ident</span>)
    <span class="ruby-ivar">@la_rules_i</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">i</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-identifier">puts</span> <span class="ruby-string">&#39;/// rruleid&#39;</span>
    <span class="ruby-identifier">p</span> <span class="ruby-keyword">self</span>
    <span class="ruby-identifier">p</span> <span class="ruby-identifier">rule</span>
    <span class="ruby-identifier">p</span> <span class="ruby-ivar">@rrules</span>
    <span class="ruby-identifier">p</span> <span class="ruby-ivar">@la_rules_i</span>
    <span class="ruby-identifier">raise</span> <span class="ruby-string">&#39;racc: fatal: cannot get reduce rule id&#39;</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-sr_conflict" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">sr_conflict</span><span
                                class="method-args">(shift, reduce)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="sr_conflict-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/state.rb, line 739</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">sr_conflict</span>(<span class="ruby-identifier">shift</span>, <span class="ruby-identifier">reduce</span>)
  <span class="ruby-identifier">c</span> = <span class="ruby-constant">SRconflict</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@ident</span>, <span class="ruby-identifier">shift</span>, <span class="ruby-identifier">reduce</span>)

  <span class="ruby-ivar">@srconf</span> <span class="ruby-operator">||=</span> {}
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">a</span> = <span class="ruby-ivar">@srconf</span>[<span class="ruby-identifier">shift</span>]
    <span class="ruby-identifier">a</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">c</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-ivar">@srconf</span>[<span class="ruby-identifier">shift</span>] = [<span class="ruby-identifier">c</span>]
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-to_s" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">to_s</span><span
                                class="method-args">()</span>
                            </div>

                            <div class="method-description">
                              

                            </div>


                            <div class="aliases">
                              Alias for: <a href="State.html#method-i-inspect">inspect</a>
                            </div>
                          </div>

                          </section>

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